Exploring DNA Structure and Nucleic Acids

What is the structural form of DNA?

• Quadruple helix

• Triple helix

• Double helix

• Single helix

How are the two strands of DNA oriented relative to each other?

• Anti-parallel

• Perpendicular

• Random

• Parallel

What type of bonds join DNA nucleotides together in each strand?

• Hydrogen bonds

• Metallic bonds

• Covalent bonds

• Ionic bonds

Which base pairs with adenine in DNA?

• Cytosine

• Guanine

• Thymine

• Uracil

How many hydrogen bonds are formed between cytosine and guanine?

• Three

• Four

• Two

• One

What is the sugar component in a DNA nucleotide?

• Ribose

• Glucose

• Deoxyribose

• Fructose

Which carbon is closest to the three prime end of a DNA nucleotide?

• Carbon 4

• Carbon 3

• Carbon 1

• Carbon 2

In the anti-parallel structure of DNA, where is the three prime end located on the left-hand side?

• Not present

• At the bottom

• In the middle

• At the top